Sash-weight pulley



. I 16,594 Apnl 1927' E. s. REILAND ET AL. Re

SASH WEIGHT PULLEY Original Filed Feb. 1 5

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ERNEST 5. REILRND PETER l l. REILHND Reissued Apr. 19, 1927.

UNITED STATES PATENT OFFICE.

ERNEST S. EEILAND AND PETER M. REILAND. OF ST. PAUL, MINNESOTA, ASSIGNORS T0 BAYPORT FOUNDRY CQMPANY, OF BAYPORT, MINNESOTA, A- CORPORATION OF MINNESOTA.

SASH-WEIGHT PULLEY.

Original No. 1,580,763, dated April 13.1926, Serial No. 8,675, f led February 12, 1925. Application for reissue filed May 20, 1926. Serial No. 110,530.

Our invention relates to sash weight pulleys in which the simplicity of construction enters into the primary feature of the invention, to the extent of providing a sash weight pulley which can be manufactured for a. nominal sum and yet wherein the efii; ciency of the same is materially increased over ordinarily constructed pulleys of this nature.

. A feature of the invention resides in a bearing corefor our sash weight pulley which is of a nomnetallic material and which is fixedly secured in the axis of the pulley by the roughened, unfinished surface of the core in the pulley which engages the nonmetallic core in a man-nor to hold it against movement therein.

It is also feature of our invention to provide a. nonmetallic core for our pulley which is treated with a lubricant so that. the core provides a self lubricating means for holding the pulley on the supporting axle and to prevent the same from engaging the side walls of the pulley housing. Thein vention includes washer-like members associated with the core member which space the pulley from the sides of the pulley housing.

It is also an important part of our invention to provide an angular core opening in the pulley which receives a nonmet-allic core member of an angular shape on the outside to conform with the angular shape in the pulley, while the core opening in the core member is of a circular formation. It is evident that the core member of a nonmetallie nature can be made of any suitable material and preferably that kind of material which is adapted t'oiabsorb lubricant and retain the same. The nonmetallic-core member extends through the pulley in. a manner to extend beyond the sides ofthe same and engage slightly against the side walls of the pulley housing.

In the drawings forming part of our specification,

Figure 1 is a perspective View of our pulley and housing.

Figure 2 is a side view of the pulley.

Figure 3 is a central section through the pulley and housing.

Figure {1 is 'an enlarged central section of an alternative construction of our invention.

Figure 5 is-a modified forn'iation of the core in the pulley.

- In the drawings our sash pulley A is held in the ordinary inilleyhonsing B which is provided with side walls 10 and 11 which are formed integral with the base plate 12. Openings 13 for screws which are adapted to hold the pulley and housing in position in the window sash are formed in the base plate 12. The housing and base plate are of the ordinary well knownconstruction.

()ur pulley A is provided with a core opening 14 which is axially positioned with m the pulley and which is formed with a roughened or serratedsurface 15 extending through the core opening 14 which is adapted to rigidly engage the nonm'etallic core member 16, which is in the form of a'sleeve and which extends through the core opening 14 so as to project slightly on either side of the pulley A, as is illustrated in Figure '3.

The core member .16 is forced into the opening 14 in the pulley A and the roughened surface 15 holds the same against movement.- therein. In the formation of our pulleys A by means of this construction the pulleys can be cast and it is not necessary to machine the same as is true where the pulley is used without our nonmetallic core member, 16. I Our nonmetallic core member 1.6 is of a nonmetallic construction, having a. fibrous nature which isadapted to absorb a lubricantso that it can be treated to provide a core member which is adapted toflubricate the pulley and project on either side of the same so as to make a sash weight pulley which is practically noiseless in operation and which will operate much more freely than in constructions heretofore used.

By means of our invention the pulleys A do not require any machine work and thus,

by using the nonmetallie core members 16 which-are treated'with a lubricant, avery econonncal pulley can be made, which is far superior in operation than without our non metallic core member. Our core, member 16 is provided with a smooth inner bearing surface 17 which engages the pulley retaining pin 18 or axle supporting the pulley, which is supported by the side walls 10 and 11 of the pulley housing B. Thus the core bearing-member 16 provides a very effective pulley A.

the bearing point, on the -an angular nature,

the member 16 means of interposing a tinished noni'netallic lubricant treated member between the pulley and the retaining pin 18, which provides the necessary lubricant.

The projecting portions of the member 16 are clearly illustrated engaging the inner surfaces of the side walls 10 and 11 of the pulley housing 13. This prevents the pulley from scraping the housing and eliminates any noise so thatthe pulley is practically noiseless in operation, being properly lubri- -ated at. all times.

To incrcase'the etlieieney' of our pulley where it "may be desired we prefer to use washer-like lltilllllttttllllU members 19 positioned on either side of the pulley A and di rcctly'engaging and supported by the pro- 'ject-ing ends of the .nomnetallic core member 16. thus providing a wide bearing surface on either side of the pulley which is nonn'iet-allie and which is treated with a lubricant so that the pulley not only lubricated from pin 18, but also with the side walls 10 and ll of the housing. This is a very important feature of our invention.

In the construction illustrated -in Figure 5 the core opening 14 of the pulley A is of being illustrated hexag- :ma1 in formation, it being obvious that it can be of anyrsuitable angular shape, is adapted to hold the similarly shaped core member 16 opening 14' and held rigidly with the ends of projecting in the sa1nenianner as illustrated in Figures 3 and 4 of our drawings. The inner surface of the core opening 14:? is roughened as is illustrated in the pulley shown in Figures 3 and 4 by 15, so that the nonmetallie core member or bushangle is held rigidly and lirmly to the In carrying out, our invention we have provided a sash weight; pulley which is much more efficient because of the lubricated core bushing member which engages the supporting axleof the, pulley and also provides a means for making the pulley A practically noiseless in operation, yet the construction is such, by casting the pulleys and using the roughened surface 15 to hold the bushing 16 in position, that the pulleys are not increased in cost of manufacture and yet are far superior to the ordinarily construct-ed which is driven into the core pulleys. Thus we have provided a sash weight pulley which is very practi 'al and is in great demand, and which we can supply to the trade for practicallythe same cost of ordinarily constructed sash weight pulleys.

In accordance with the patent statutes we have described the principles of our sash weight pulleys, and while we have illustrated a. particular construction, we desire to have it understood that this is only illustrative-o't' our invention and that the same can be carried out by other means and applied to uses other than those above set forth within the scope of the following claims.

\Ve claim:

1. A sash weight pulley including, a housing having parallel side walls, a pulley. adapted to be positioned between said side walls, a cored polyangular opening formed through said pulley having an'inner roughened serrated surface and a nonmetallic core bushing member treated with a lubricant adapted to be held iixed by said roughened cored surface in said pulley. v

2. 'Asash weight pulley having a casing, said pulley having a cored bore to'rmedtherethrough, the inner surface of said bore being rough and untinished. and a fibrous bushing lit-ting tightly within said bore with its.

ends extending beyond the endsof the here, said bushing being held suilicientlv tight within the bore to prevent the side of the pulley from contacting the inner surface of the casing, said bushing having itsperipheral surface engaged and penetrated by the projections of said lnlliuished-bore surface and with the ends of the bushing abutting the inner surfaces of the casing.

3. In a device of the character described, a casing a pulley therein having a hole therethroi'igh, a pivot pin rigidly held in the casing for supporting the pulley. a fibrous bushing surrounding the pin and tightly held in the hole through the pulley to prevent relative movement between the bushing and pulley, the ends of the bushing abutting the inner walls ofthe casing, and means oil-the. exterior otthe bushing to positively prevent the pulley from slippingcndwise of the bushing and contacting the inner surface of the casing.

' ERNEST S. REILAND.

' PETER M. REILAND. 

